How does the Bohr model show you an atom has become an ion?

1 answer:

6 0

An early model of the atom was developed in 1913 by Danish scientist Niels Bohr (1885–1962). The Bohr model shows the atom as a central nucleus containing protons and neutrons with the electrons in circular orbitals at specific distances from the nucleus . These orbits form electron shells or energy levels, which are a way of visualizing the number of electrons in the various shells. These energy levels are designated by a number and the symbol "n." For example, 1n represents the first energy level located closest to the nucleus.

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1. How many covalent bonds are expected to form from phosphorus in order to obey the octet rule?

Grace [21]

To satisfy the octet rule, there has to be eight electrons in phosphorus's outermost shell. Phosphorus has five electrons in its valence shell, fluorine has seven. This means that phosphorus would have to bond to three fluorine atoms in order to have eight electrons in its valence shell without breaking the octet rule in any one of the fluorine atoms.

7 0

4 years ago

If 832J of energy is required to raise the temperature of a sample of aluminum from 20.0° C to 97.0° C, what mass is the sample

LiRa [457]

Data:
Q (Amount of heat) = 832 J
m (mass) = ?
c (Specific heat) = <span>0.90 J/(g × ° C)
T (final) = 97 ºC
To (initial) = 20 ºC
</span>ΔT = T - To → ΔT = 97 - 20 → ΔT = 77 ºC

Formula:
Q = m*c*ΔT

Solving:
Q = m*c*ΔT
832 = m*0.90*77
832 = 69.3m
69.3m = 832
$m = \frac{832}{69.3}$
$\boxed{\boxed{m \approx 12.00\:g}}\end{array}}\qquad\quad\checkmark$

5 0

3 years ago

How many liters of a 0.50 solution are needed to give 3.5 moles of solute

sertanlavr [38]

0.50 Molar means 0.50 moles/liter
(.5 moles/liter)/3.5 moles= 1/7 Liters

3 0

3 years ago

Read 2 more answers

Why was the morning session stopped unsuccessfully?

Sonbull [250]

Answer:

the reactor was overheating